1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2461f9a38de0b186c42d0b5045caf667308610e2a53b76930f292cdfadc15367. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ee39fcc-5dc4-48a0-8e73-7f63c34c809b.json and https://artists.proofprofile.net/proofs/artist/2ee39fcc-5dc4-48a0-8e73-7f63c34c809b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee40a416aec25f67070b23afa977b06a2e325dd7633711d1990e4c095d158ec. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC050201350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5473d3862a9bed0b2c92a938eeee39851a5e84d0089915c4e45dccedeeae99. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS161701003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f8197cb32ddd2626e6ea83c50f7f444a0403501de16e3236106a3025691cad. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLBP51600361.
Keep On Raving On (Official Free Festival 2022 Freestyle Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7cdf05ea70ab245455671a9750c91ad15811edf4d66cb5a3b339689c1fad89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2395285.
My Little Fantasy - Bass-D & King Matthew Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b99387e7b537c77c89e8c6274ace6d4f376cca0c053dd7659ddb5a2c9f557d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE802200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e8a81bd692428719007d44513a8a8f72385613a93119f7269fb7b6b5c5e18. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS202400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb26f1625c6c4f000a69edf61a18810ee81462f9f1d70b2e4e7a7543d91f654. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS161701057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8409ed06c25f16a28af8df3dce4f58ff7c9c0f66f7219fa7e9a0a626a02069d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS241000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5752bf84d8deba8503c64eb2bf2ca9b0e43d1e84f88c5dcea76b2bf142f0c3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE801000478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c17423487e6f71ae1da54504b1e83a90a19a69bf0659d11caba01aeb6ea6a00. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS160700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cd758cd22d6e4577bd3d00184547bdfae35cdca7b014fc57f973bf438fd35a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS160701355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7cdf05ea70ab245455671a9750c91ad15811edf4d66cb5a3b339689c1fad89. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2395285.
Toytown - Bass-D, F. Noize, Potato Remix
Toytown (Bass-D, F. Noize, Potato Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8409ed06c25f16a28af8df3dce4f58ff7c9c0f66f7219fa7e9a0a626a02069d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS241000059.
Masters Of Hardcore - Temple Of Resonance (Chapter XLVII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818f55577c00393534ef54a50fe2381c94c892244c84818e8fe2332b9095b99. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS241103054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25885e5cca2ed0d387cca752e983b24d29bb01452b1f6bdbca387186078f4889. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS241103055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b508e845767b947d9dd0d9c973e47e3492ba14b6abe449b4f7767862026bdad. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLFL72400146.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Masters Of Hardcore The Conquest Of Fury
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a16dabb4ca76efe81a366383ec9f8d05e7a299a5ccbe30cf8b18faa5b35193. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLFL71300038.
Ultimate Sextrack - Bass D & King Matthew Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce0e960d7a34ce9ae04d18b00f7cf0a329cca92a49ebbbf47ba63800e39c75b. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS241502996.